package com.example.demo.syn;

import net.bytebuddy.asm.Advice.This;

//不安全的取钱
//两个人	去银行取钱，账户
public class UnsafeBank {

	public static void main(String[] args) {
		// 账户;
		Account account = new Account(100, "结婚基金");
		
		Drawing you = new Drawing(account, 50, "你");
		
		Drawing girlFriend = new Drawing(account, 100, "girlFriend");
		
		you.start();
		girlFriend.start();
		
	}

}

//账户
class Account{
	int money; //余额
	String name; //卡名
	public Account(int money, String name) {
		super();
		this.money = money;
		this.name = name;
	}
}

//银行：模拟取款
class Drawing extends Thread {
	Account account;//账户
	//取了多少钱
	int drawingMoney;
	//现在手里有多少钱
	int nowMoney;
	public Drawing(Account account, int drawingMoney, String name) {
		super(name);
		this.account = account;
		this.drawingMoney = drawingMoney;
	}
	//取钱
	//synchronized 默认锁的是this
	@Override
	public void run() {
		//锁的对象就是变化的量，需要增删改的对象
		synchronized (account) {
			//判断有没有钱
			if(account.money - drawingMoney <0) {
				System.out.println(Thread.currentThread().getName()+"钱不够，取不了");
				return;
			}
			
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			
			//卡内余额 = 余额 - 你取的钱
			account.money = account.money - drawingMoney;
			
			//你手里的钱
			nowMoney = nowMoney +drawingMoney;
			
			System.out.println(account.name+"余额为："+ account.money);
			//Thread.currentThread().getName() = this.getName()
			System.out.println(this.getName() + "手里的钱"+ nowMoney);
		}

	}
	
}
